dir: Copy everything on container copy
dir: Copy everything on container copy

Instead of just copying the rootfs.

Closes #2371

Signed-off-by: Stéphane Graber <089afc6d81f66f1168a9849e15660feae286e024@ubuntu.com>

chrisglass/lxd,jsavikko/lxd,stgraber/lxd,lxc/lxd,stgraber/lxd,lxc/lxd,akshaykarle/lxd,chrisglass/lxd,erikmack/lxd,lxc/lxd,stgraber/lxd,georghopp/lxd,mjeanson/lxd,stgraber/lxd,hallyn/lxd,pcdummy/lxd,Skarlso/lxd,atxwebs/lxd,pcdummy/lxd,georghopp/lxd,lxc/lxd,ollie314/lxd,mjeanson/lxd,lxc/lxd,techtonik/lxd,hallyn/lxd,Skarlso/lxd,atxwebs/lxd,techtonik/lxd,techtonik/lxd,ollie314/lxd,Skarlso/lxd,hallyn/lxd,jsavikko/lxd,stgraber/lxd,hallyn/lxd,lxc/lxd,chrisglass/lxd,georghopp/lxd,hallyn/lxd,hallyn/lxd,mjeanson/lxd,Skarlso/lxd,atxwebs/lxd,ollie314/lxd,erikmack/lxd,akshaykarle/lxd,erikmack/lxd,stgraber/lxd,jsavikko/lxd,atxwebs/lxd,stgraber/lxd,pcdummy/lxd,akshaykarle/lxd,lxc/lxd